166156436 has 48 divisors (see below), whose sum is σ = 320885712. Its totient is φ = 74956800.

The previous prime is 166156427. The next prime is 166156447. The reversal of 166156436 is 634651661.

166156436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 4866436 + 161290000 = 2206^2 + 12700^2 .

It is a super-2 number, since 2×166156436² = 55215922448444192, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166156436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169580 + ... + 170556.

It is an arithmetic number, because the mean of its divisors is an integer number (6685119).

Almost surely, 2^166156436 is an apocalyptic number.

It is an amenable number.

166156436 is a deficient number, since it is larger than the sum of its proper divisors (154729276).

166156436 is a wasteful number, since it uses less digits than its factorization.

166156436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100 (or 1098 counting only the distinct ones).

The product of its digits is 77760, while the sum is 38.

The square root of 166156436 is about 12890.1681912999. The cubic root of 166156436 is about 549.7590525864.

The spelling of 166156436 in words is "one hundred sixty-six million, one hundred fifty-six thousand, four hundred thirty-six".